Hi Alex
Happy new year to you.
I’ve just completed my first ride wearing a heart rate monitor. The BPM was actually spot on throughout the ride but that hearf rate red graph was off. At one point the BPM was at about 150 but the chart was showing it just over 100.
It’s as if the heart rate chart isn’t taking account of the scale at the left hand side. It did wonder if that was by design. I am very unfit at the moment as I am recovering from a fractured foot and A bad dose of covid., so my power zones and heart rate graph would fit in with the ftp I’ve got. I did wonder if people with a very high FTP would have issues displaying the heart rate on the graph.
Is this expected behaviour. Thanks